CANDACE Bushnell, for one, doesn’t seem too affected by the news of the “Lipstick Jungle” demise. Bushnell, whose novel of the same title inspired NBC’s poorly-rated show, danced and drank the night away at the National Book Awards after-party at Socialista hosted by Grove/Atlantic publisher Morgan Entrekin and movie mogul Harvey Weinstein. (Entrekin, who used to date Bushnell and was also her publisher, showed; Weinstein didn’t.) Also there: Parker Posey, writers Colson Whitehead, Nathan Englander and Sean Wilsey, and hundreds of boozed-up publishing types, most of whom nervously chatted with one another about their future job prospects.